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<?xml version="1.0" encoding="EUC-JP"?>
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<title>ưŪ֥ͭ (DSO) ݡ - Apache HTTP </title>
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<p class="menu"><a href="./mod/">⥸塼</a> | <a href="./mod/directives.html">ǥ쥯ƥ</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Ѹ</a> | <a href="./sitemap.html">ȥޥå</a></p>
<p class="apache">Apache HTTP С 2.2</p>
<img alt="" src="./images/feather.gif" /></div>
<div class="up"><a href="./"><img title="<-" alt="<-" src="./images/left.gif" /></a></div>
<div id="path">
<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP </a> > <a href="http://httpd.apache.org/docs/">ɥơ</a> > <a href="./">С 2.2</a></div><div id="page-content"><div id="preamble"><h1>ưŪ֥ͭ (DSO) ݡ</h1>
<div class="toplang">
<p><span>Available Languages: </span><a href="./en/dso.html" hreflang="en" rel="alternate" title="English"> en </a> |
<a href="./ja/dso.html" title="Japanese"> ja </a> |
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</div>
<p>Apache HTTP Фϥ⥸塼벽줿ץǡ
Ԥ⥸塼뤳ȤǥФȤ߹ൡǽ֤ȤǤޤ
⥸塼ϥФӥɤȤ <code class="program"><a href="./programs/httpd.html">httpd</a></code> Хʥ
ŪȤ߹ळȤǤޤ⤷ϡ<code class="program"><a href="./programs/httpd.html">httpd</a></code> ХʥȤ
̤¸ߤưŪ֥ͭ (: Dynamic Shared Object)
(DSO) Ȥƥѥ뤹뤳Ȥ
ǤޤDSO ⥸塼ϥФӥɤȤ˥ѥ뤷ꡢ
Apache ĥġ (<code class="program"><a href="./programs/apxs.html">apxs</a></code>)
ȤäƸǥѥ뤷ɲäǤޤ</p>
<p>ʸ DSO ⥸塼λȤȡȤߤˤĤ
ޤ</p>
</div>
<div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#implementation"></a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#usage">ˡγ</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#background">ط</a></li>
<li><img alt="" src="./images/down.gif" /> <a href="#advantages">ȷ</a></li>
</ul></div>
<div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="implementation" id="implementation"></a></h2>
<table class="related"><tr><th>Ϣ⥸塼</th><th>Ϣǥ쥯ƥ</th></tr><tr><td><ul><li><code class="module"><a href="./mod/mod_so.html">mod_so</a></code></li></ul></td><td><ul><li><code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code></li></ul></td></tr></table>
<p>ġ Apache ⥸塼ɤ뤿 DSO ݡȤ
<code class="module"><a href="./mod/mod_so.c.html">mod_so.c</a></code> Ȥ⥸塼εǽ˴ŤƤޤ
Υ⥸塼 Apache ΥŪȤ߹ޤƤɬפޤ
<code class="module"><a href="./mod/core.c.html">core.c</a></code> ʳǤ DSO ˤǤʤͣ
⥸塼Ǥ¾塢¾Τ٤Ƥ Apache Υ⥸塼ϡ
<a href="install.html">ȡʸ</a>Ƥ褦ˡ
<code class="program"><a href="./programs/configure.html">configure</a></code>
<code>--enable-<em>module</em>=shared</code> ץǤ줾
DSO ӥɤˤ뤳ȤˤꡢDSO ⥸塼ˤ뤳ȤǤޤ
<code>mod_foo.so</code> Τ褦 DSO ˥⥸塼뤬ѥ뤵С
<code>httpd.conf</code> ե <code class="module"><a href="./mod/mod_so.html">mod_so</a></code>
<code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code>
ǥ쥯ƥ֤ȤȤǥФεưƵưˤΥ⥸塼
ɤ褦ˤǤޤ</p>
<p>Apache ⥸塼Ѥ (ä˥ɥѡƥ⥸塼) DSO ե
ñˤ뤿ˡ<code class="program"><a href="./programs/apxs.html">apxs</a></code>
(<dfn>APache eXtenSion</dfn>) Ȥݡȥץबޤ
Apache Υĥ<em></em> DSO ⥸塼ӥɤ뤿
ȤȤǤޤȯۤñǤ: Apache Υȡ
<code class="program"><a href="./programs/configure.html">configure</a></code><code>make install</code> ΤȤ Apache
C إåȡ뤷DSO ӥѤΥץåȥե¸
ѥȥΥե饰 <code class="program"><a href="./programs/apxs.html">apxs</a></code> ץɲäޤ
ˤꡢ桼 Apache ۥĥʤǡ
DSO ݡȤΤΥץåȥե¸Υѥ
ե饰뤳Ȥʤ Apache Υ⥸塼Υѥ
Ǥ褦ˤʤޤ</p>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="usage" id="usage">ˡγ</a></h2>
<p>Apache 2.0 DSO ǽγάΤ뤳ȤǤ뤿Ρ
ûʷʳפǤ:</p>
<ol>
<li>
<em>ۤƤ</em> Apache ⥸塼롢 <code>mod_foo.c</code>
Ȥơ DSO <code>mod_foo.so</code> ˥ӥɡȡ:
<div class="example"><p><code>
$ ./configure --prefix=/path/to/install --enable-foo=shared<br />
$ make install
</code></p></div>
</li>
<li>
<em>ɥѡƥ</em> Apache ⥸塼롢 <code>mod_foo.c</code>
Ȥơ DSO <code>mod_foo.so</code> ˥ӥɡȡ:
<div class="example"><p><code>
$ ./configure --add-module=<var>module_type</var>:/path/to/3rdparty/mod_foo.c \<br />
<span class="indent">
--enable-foo=shared<br />
</span>
$ make install
</code></p></div>
</li>
<li>
ͭ⥸塼 <em>塹Υȡ</em> Τ
Apache :
<div class="example"><p><code>
$ ./configure --enable-so<br />
$ make install
</code></p></div>
</li>
<li>
<em>ɥѡƥ</em> Apache ⥸塼롢 <code>mod_foo.c</code>
Ȥơ <code class="program"><a href="./programs/apxs.html">apxs</a></code> Ȥä
Apache ĥ<em></em> DSO ˥ӥɡȡ:
<div class="example"><p><code>
$ cd /path/to/3rdparty<br />
$ apxs -c mod_foo.c<br />
$ apxs -i -a -n foo mod_foo.la
</code></p></div>
</li>
</ol>
<p>ɤξˤƤ⡢ͭ⥸塼ѥ뤷ǡ
<code>httpd.conf</code>
<code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code>
ǥ쥯ƥ֤Ȥä Apache ⥸塼Ѥ褦
ʤФʤޤ</p>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="background" id="background">ط</a></h2>
<p>Ƕ Unix Ϥ OS ˤ <em>ưŪ֥ͭ</em> (DSO)
ưŪ/ɤȤΤ
¸ߤޤϡ¹Ի˥ץΥɥ쥹֤
ɤǤ褦̤ʷǥץӥɤ뤳Ȥ
ǽˤޤ</p>
<p>ΥɤĤˡǹԤʤȤǤޤ: ¹ԥץब
ư줿Ȥ <code>ld.so</code> Ȥƥץ
ˤ꼫ưŪ˹Ԥʤˡȡ¹ԥץ椫顢ƥॳ
<code>dlopen()/dlsym()</code> ˤ Unix ؤ
ץॷƥΥեȤäƼưǹԤʤˡȤ
ޤ</p>
<p>ǽˡǤ DSO ̤<em>ͭ饤֥</em> <em>DSO
饤֥</em> ȸƤФƤơDSO ̾
<code>libfoo.so</code> <code>libfoo.so.1.2</code> Τ褦ˤʤäƤޤ
ϥƥǥ쥯ȥ (̾ <code>/usr/lib</code>) ¸ߤ
¹ԥץؤΥϥӥɻ <code>-lfoo</code>
ꤹ뤳ȤdzΩޤˤ饤֥ؤλȤ¹ԥץ
ե˽ޤơư Unix Υ <code>/usr/lib</code> 䡢
<code>-R</code> Τ褦ʥץˤϡɥɤ줿ѥ
Ķѿ <code>LD_LIBRARY_PATH</code> ˤꤵ줿ѥ椫
<code>libfoo.so</code> ξĤ뤳ȤǤޤ줫顢
¹ԥץ (ޤ̤) ܥ DSO ˤ륷ܥ
褷ޤ</p>
<p>̤ϼ¹ԥץΥܥ DSO ϻȤޤ
(DSO ϰŪʥɤˤѲǽʥ饤֥ǤΤ)
Ǥ顢ʤ륷ܥβɬפޤ
ܥ Unix ˤ괰ʲ褬ԤʤޤΤǡ¹ԥե뼫Ȥ
⤹ɬפޤ(ºݤΤȤŪǤʤˡǥƤ
٤Ƥμ¹ԥץȤ߹ޤƤ볫ѤΥɤΰ
<code>ld.so</code> ư륳ɤޤޤƤޤ)褯Ȥ
饤֥ưŪɤ餫Ǥ饤֥Υɤ
ƥ饤֥ <code>libc.so</code> Τ褦ˤư¸Ǥ褯
ץΤɬפʥǥΰ뤳ȤǤޤ</p>
<p>ĤˡǤ DSO ̤<em>֥ͭ</em>
<em>DSO ե</em>ȸƤФƤơǤդγĥҤդ뤳ȤǤޤ
(ɸŪ̾ <code>foo.so</code> Ǥ)
Υե̾ϥץѤΥǥ쥯ȥ֤졢
Ȥ¹ԥץؤΥϼưŪˤϤޤ
ǤΤǡ¹ԥץ <code>dlopen()</code> Ȥä
¹Ի˼ư DSO ץΥɥ쥹֤˥ɤɬפޤ
λǤϼ¹ԥץФ DSO ΥܥβϹԤʤޤ
Unix Υ DSO (ޤ̤) ܥ
¹ԥץˤꥨݡȤ줿ܥȴ˥ɤ줿
DSO 饤֥ˤꥨݡȤ줿ܥ (äˡɤˤǤ⤢
<code>libc.so</code> Τ٤ƤΥܥ) ǼưŪ˲褷ޤ
뤳ȤǡDSO Ϻǽ餫Ū˥ƤΤ褦ˡ
¹ԥץΥܥΤ뤳ȤǤޤ</p>
<p>ǸˡDSO API ˡץ
ǥǥѥåơ֥<em>ʤ</em>ǥܥȤȤǤ褦ˡ
<code>dlsym()</code> ȤäƤĤΥܥ褷ޤ
ʤ: ¹ԥץɬפʤ٤ƤΥܥưDz褷ʤ
ʤޤεϥץΥץʥʬ
ɬפˤʤޤǥɤɬפʤ (ʤ)
ȤǤɬפʤСܥץεǽĥ뤿
ʬưŪ˥ɤ뤳ȤǤޤ</p>
<p> DSO ϴñʤ褦˸ޤʤȤ
ޤ: ץĥ뤿 DSO ȤäƤȤˡ
DSO ¹ԥץफ饷ܥ褹Ǥ (ܤˡ)
ϤʤǤ礦ϡDSO Υܥ¹ԥץ
ܥ뤫ֵղפȤΤϥ饤֥߷
(饤֥ϤѤץΤȤϲ
Τʤ) ȿƤơεǽϤ٤ƤΥץåȥե
櫓ǤϤʤɸಽ⤵ƤʤǤ
ºݤˤϼ¹ԥץΥХʥܥϺƥݡȤ뤳Ȥ
ޤʤDSO ȤȤǤޤ˥Х륷ܥ뤹٤Ƥ
ݡȤ褦ˤˡĤ뤳Ȥ¹Ի˥ץ
ĥ뤿 DSO ȤȤΰ֤Ǥ</p>
<p>ͭ饤֥Υץ̤ˡǤDSO ϤΤ
߷פ줿ΤǤ顣äơˡϥڥ졼ƥƥब
ۤȤɤ٤ƤμΥ饤֥ǻȤƤޤ
ץγĥΤ˶֥ͭȤѤ롢Ȥ
ޤȤƤޤ</p>
<p>1998 ǯλǡ¹Ի˼ºݤ˵ǽĥΤ DSO ȤäƤ
եȥѥåϾǤ: Perl 5 (XS DnaLoader ⥸塼
ˤ)Netscape <em>ʤ</em>ǤApache ϤǤ
⥸塼γǰȤäƵǽĥƤơŪ˥ǥѥåꥹȤ
Ť⥸塼 Apache ǽؤΥԤʤäƤޤΤǡ
С 1.3 顢Apache DSO Ȥ֤ˤʤޤ
Apache ϼ¹Ի DSO Ȥäƥ⥸塼ɤ褦ˤǤ
̿դƤΤǤ</p>
</div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
<div class="section">
<h2><a name="advantages" id="advantages">ȷ</a></h2>
<p>嵭 DSO ˴Ťǽϰʲޤ:</p>
<ul>
<li>ºݤΥХץȤΩƤ뤿ˡ
ӥɻ <code>configure</code> ΥץȤ
¹Ի <code>httpd.conf</code> ѥޥ
<code class="directive"><a href="./mod/mod_so.html#loadmodule">LoadModule</a></code>
ȤȤǤޤΤǡХѥåνޤޤ
ȤСĤ Apache Υȡ뤫
㤦Υ (ɸǤ SSL ǡǾȳĥ [mod_perl, PHP3]
<em>ʤ</em>) ¹Ԥ뤳ȤǤޤ</li>
<li>ȡθǤäƤ⡢ФΥѥåɥѡƥ
⥸塼Ǵñ˳ĥǤ褦ˤʤޤϡApache
ѥåȡPHP3, mod_perl, mod_fastcgi <em>ʤ</em> ɲä
ѥåǤΤǡʤȤ٥ΥѥåԤˤȤä
礭ޤ</li>
<li>Apache ⥸塼γȯñˤʤޤ
DSO <code class="program"><a href="./programs/apxs.html">apxs</a></code> Ȥ߹碌ˤꡢApache ĥ
ǺȤǤȯΥ⥸塼οС
¹ Apache ФȤ߹ि <code>apxs -i</code>
<code>apachectl restart</code> Ԥʤɤʤ뤫Ǥ</li>
</ul>
<p>DSO ˤϰʲηޤ:</p>
<ul>
<li>٤ƤΥڥ졼ƥƥबץΥɥ쥹֤
ɤưŪɤ뤳ȤݡȤƤǤϤʤΤǡ
ץåȥեˤäƤ DSO ϻȤޤ</li>
<li>Unix ΥܥβɬפǤΤǡ
ΥХإåɤˤꥵФεư֤ 20% ٤ʤäƤޤ</li>
<li>¸ (PIC) ( position independent code)
Хɥ쥹Τʣʥ֥ΥȥåɬפʤȤꡢ
ɬХɥ쥹Ʊ餤®٤Ǥ櫓ǤϤޤΤǡ
ץåȥեˤäƤϥФμ¹®٤ 5% ٤ʤޤ</li>
<li>DSO ⥸塼Ϥ٤ƤΥץåȥե¾ DSO ˴Ť
饤֥ФƥǤ (<code>ld -lfoo</code>)
Ȥ櫓ǤϤޤΤ (ȤСa.out ΥץåȥեǤ
εǽϤޤELF ΥץåȥեˤϤޤ)
٤ƤμΥ⥸塼 DSO Ȥ櫓ǤϤޤ
ȡDSO եȤƥѥ뤵줿⥸塼
Ȥ륷ܥϡ
Apache ΥΥܥ롢C 饤֥ (<code>libc</code>)
Apache ȤäƤ¾Τ٤ƤŪʥ饤֥ưŪ饤֥
ܥ롢PIC ˤŪʥ饤֥ (<code>libfoo.a</code>)
ܥΤߤ¤ޤ¾ΥɤȤˡϡ
Apache ȤǤˤΥɤؤλȤ褦ˤ뤫
<code>dlopen ()</code> ȤäƥɤʬȤǥɤ뤫
ɤ餫ޤ</li>
</ul>
</div></div>
<div class="bottomlang">
<p><span>Available Languages: </span><a href="./en/dso.html" hreflang="en" rel="alternate" title="English"> en </a> |
<a href="./ja/dso.html" title="Japanese"> ja </a> |
<a href="./ko/dso.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
</div><div id="footer">
<p class="apache">Copyright 2006 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
<p class="menu"><a href="./mod/">⥸塼</a> | <a href="./mod/directives.html">ǥ쥯ƥ</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Ѹ</a> | <a href="./sitemap.html">ȥޥå</a></p></div>
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